The Growing Up Today Study(GUTS), established in 1996, follows over 26,000 individuals who are children of women in the second Nurses' Health Study

Nurses' Health Study

The Nurses Health Study, established in 1976 by Dr. Frank Speizer, and the Nurses' Health Study II, established in 1989 by Dr. Walter Willett, are the most definitive long-term epidemiological studies conducted to date on older women's health. The study has followed 121,700 female registered...

cohort. 16,882 children aged 9–14 in 1996 were enrolled in GUTS I and 10,923 children aged 9–14 in 2004 were enrolled in GUTS II.

Design

Participants were initially surveyed on an annual basis until 2001, and have been surveyed biennially thereafter.